EP0784810A1 - Reversing device with manual feed for strip print media - Google Patents
Reversing device with manual feed for strip print mediaInfo
- Publication number
- EP0784810A1 EP0784810A1 EP95920738A EP95920738A EP0784810A1 EP 0784810 A1 EP0784810 A1 EP 0784810A1 EP 95920738 A EP95920738 A EP 95920738A EP 95920738 A EP95920738 A EP 95920738A EP 0784810 A1 EP0784810 A1 EP 0784810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recording medium
- turning
- turning device
- paper
- deflecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/32—Arrangements for turning or reversing webs
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
- G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
- G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
- G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters
- G03G15/237—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters the image receiving member being in form of a continuous web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/10—Means using fluid made only for exhausting gaseous medium
- B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
- B65H2406/111—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along a curved path, e.g. fluidised turning bar
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
- G03G2215/00417—Post-fixing device
- G03G2215/0043—Refeeding path
- G03G2215/00438—Inverter of refeeding path
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
- G03G2215/00443—Copy medium
- G03G2215/00451—Paper
- G03G2215/00455—Continuous web, i.e. roll
- G03G2215/00459—Fan fold, e.g. CFF, normally perforated
Definitions
- the invention relates to a turning device arranged inside an electrographic printing device with manual threading for tape-shaped recording media.
- EP-Bl-01 54 695 In order to produce multicolor and reverse side printing with electrographic printing devices that work on continuous paper, it is known from EP-Bl-01 54 695 to operate two continuous paper printers one after the other, the paper printed in the first printer being turned over and subsequently in the second printer on the second side is printed. The effort is considerable due to the second printer required.
- the described electrographic printing device is only suitable for printing on both sides of the recording medium. A change of operating mode is not planned.
- the reversing bar turning device used requires a lot of installation space due to the way in which the deflecting bars are arranged.
- the recording media is guided one behind the other through the aggregates of the printing device via two adjacent transport tracks.
- the turning station has the task of turning the recording medium in the lateral position by 180 °, on the other hand it has to deflect the recording medium from one to the other transport path.
- it is necessary to use the To guide recording medium webs next to each other at the closest possible distance. There is therefore the problem, particularly with regard to the turning station, of rotating and displacing the recording medium in a very confined space.
- Electrophotographic printing devices should also be able to process recording media made from a wide variety of materials, e.g. Materials that are sensitive to strong deflections.
- the aim of the invention is therefore to provide a compact, user-friendly turning device for tape-shaped recording media, which enables simple manual threading.
- Another object of the invention is to design the turning device in such a way that recording media with a wide variety of materials can be processed.
- the turning device should be able to be arranged in a user-friendly manner in an electrographic printing device which enables printing on one or both sides of a tape-shaped recording medium.
- the tape-shaped recording medium can be inserted easily and tape running disturbances can be easily eliminated.
- the compact structure which has a slight tendency to transverse vibrations of the recording medium, makes the device particularly suitable for installation in a multifunctional printing device for printing on one or both sides of a tape-shaped recording medium.
- the turning device is designed as an independent structural unit and is interchangeably fastened in the device by means of fastening means. In this way, if a turning device with an automatic requirement cannot be used due to critical properties of the recording medium, this turning device can be removed in a few simple steps and replaced by the turning device according to the invention, and the recording medium can be inserted manually.
- An air guidance system through the deflection elements generates a friction-reducing air cushion at the deflection points, which reduces the risk of tearing.
- FIG. 1 shows a schematic illustration of an electrographic printing device for printing on tape-shaped recording media in simplex or duplex mode
- FIG. 2 shows a schematic sectional illustration of the same electrographic printing device
- FIG. 3 shows a schematic illustration of a turning device with a manual threading device
- FIGS 4 and 5 are schematic representations of the manual
- Figure 6 is a schematic representation of the turning device in the service position
- Figure 7 is a schematic representation of the turning device in the operating position.
- An electrographic printing device for printing on tape-shaped recording media 10 of different bandwidth contains an electromotive-driven photoconductor drum as intermediate media 11.
- a band-shaped intermediate carrier e.g. use an OPC tape or a magneto-styli arrangement, e.g. in EP-Bl-0 191 521.
- the various units for the electrophotographic process are grouped around the intermediate support 11. These are essentially: a charging device 12 in the form of a charging corotron for charging the intermediate carrier 11; a character generator 13 with an LED comb for character-dependent exposure of the
- Intermediate support 11 which extends over the entire usable width of the intermediate support 11; a developer station 14 for coloring the character-dependent charge image on the intermediate carrier 11 with the aid of a single or two-component developer mixture; a transfer printing station 15 which extends over the width of the intermediate carrier 11 and with which the toner images are transferred to the recording medium 10.
- a cleaning station 16 is provided, with a cleaning brush integrated therein with the associated suction device and a discharge device 17.
- the intermediate carrier 11 is driven by an electric motor and moved in the direction of the arrow in printing operation.
- the printing device contains a fixing station 18 which is arranged downstream of the transfer printing station 15 in the transport direction of the recording medium and which is designed as a thermal printing unit, with a heated fixing roller 19 with associated pressure roller 20, and guide rollers 21 which are arranged downstream of the fixing station and which serve, among other things, as output elements ⁇ serve for a stacking device 22 for the recording medium 10.
- a fixing station 18 which is arranged downstream of the transfer printing station 15 in the transport direction of the recording medium and which is designed as a thermal printing unit, with a heated fixing roller 19 with associated pressure roller 20, and guide rollers 21 which are arranged downstream of the fixing station and which serve, among other things, as output elements ⁇ serve for a stacking device 22 for the recording medium 10.
- the fusing station shown there are also other fusing stations, e.g. possible with a heated or unheated inlet saddle or a cold inflation station.
- the tape-shaped recording medium 10 is e.g. Assembled as pre-folded continuous paper provided with edge perfor
- the transport of the recording medium is preferably carried out via a transport device 25 associated with the transfer station 15, in the form of transport or tractor belts 26 provided with pins, which, guided by drive shafts 27, engage in the perforations on the edges of the recording medium 10.
- a transport-hole-free recording medium an adapted transport device familiar to the person skilled in the art is to be provided which holds the recording medium eg transported by friction, controlled by a control arrangement scanning synchronization marks.
- a turning device 28 is arranged in the housing area of the printing device between the storage area 23 and the fixing station 18, the function of which will be explained later and via which the recording medium is returned from the fixing station 18 to the transfer printing station 15.
- the printing device is controlled by a printer control, which is shown schematically here, with a central unit CPU, a page memory SP, which is divided into memory areas depending on the page, and a data control unit DC. All control units are connected to each other and to the units of the printing device via a BUS system.
- the electrographic printing device is suitable for printing on recording media with different bandwidths.
- the intermediate carrier 11 (photoconductor drum) has a usable width that corresponds to the largest possible recording medium width (e.g. a format DIN A3 landscape). This width corresponds to twice the A4 tape width. It is thus possible to arrange two A4 recording medium widths alongside one another in the area of the transfer printing station 15.
- the fixing station 18 and the other electrophotographic units, such as developer station 14, character generator 13, cleaning station 16, are designed in accordance with this usable width.
- the transport device 25 can be designed to be width-adjustable. This can be achieved, for example, in that the drive wheels, which carry the conveyor belts (nubbed belts) engaging in the perforations of the record carrier, are mounted displaceably on polygonal shafts.
- Intervene record carrier So that these transport elements do not interfere with operation with only one wide recording medium, they can be arranged such that they can be plugged in and plugged in or swiveled out, or it is possible to provide the drive wheels 27 of the transport device 25 with pins or knobs that can be moved in and out.
- the turning device 28 which is arranged in a return channel for narrow recording media from the fixing station 18 to the transfer printing station 15, is used for rotating the front and back
- the narrow, for example DIN A4 wide, recording medium is started from the storage area 23 via the Feed rollers 24 are fed to the transfer printing zone E2 of the transfer printing station 15 and printed on a top side with a front side toner image.
- the front of the recording medium 10 is identified by solid transport arrows, the underside by dashed transport arrows.
- the recording medium with the front side toner image is then fed to the fixing station 18 and the front side toner image is fixed.
- the recording carrier is transported further to the turning device 28, the deflection contour of which is positioned in a turning position.
- the record carrier is turned with respect to its front and rear side and fed again via the feed rollers 24 to the transfer printing device 15 in the area of the transfer printing zone E1 such that its rear side can be provided with a rear side toner image. Thereafter, the recording medium is again fed to the fixing station 18 and the back toner image is fixed, and then the recording medium printed on both sides is deposited in the stacking device 22.
- the page memory SP contains memory areas VS for storing the front side image data and memory areas RS for storing the back side image data.
- the data preparation takes place via the data control device DC, the data being supplied from a data source (HOST), for example an external data memory, via an interface of the data control device DC.
- the data of the individual pages to be printed are stored in the page memory SP, separated separately from the front side VS and rear side RS in the corresponding memory areas.
- the data are then called up in a time-controlled manner, so that the desired front-back assignment of the toner images on the recording medium is achieved. Turning device
- the turning device 28 (FIG. 3) essentially contains four deflection elements 32, 34, 36, 37 arranged in two so-called turning triangles 33, 35, via which the recording medium 10 is guided starting from a paper inlet channel 30 to a paper outlet channel 31.
- the turning triangle 33 is assigned stationary to the paper inlet channel 30, the turning triangle 35 can be swiveled in and out of the paper outlet channel 31.
- the paper inlet channel 30 and the paper outlet channel 31 are arranged side by side, namely the paper inlet channel 30 in a first plane and the paper outlet channel 31 in a second plane parallel thereto.
- the areas of the recording medium 10 marked with crosses in the drawings indicate the concreted fixed side, the free areas the unprinted side.
- the record carrier 10 fed in via the paper inlet channel 30 in the first level is first deflected into the second level via a first straight deflection element 34.
- the straight deflection element 34 consists of a hollow deflection rod or roller. Downstream of the first straight deflecting element 34 in the paper transport direction is a first oblique deflecting element 32 in the form of a hollow profile arranged approximately 45 ° to the direction of paper travel for transverse guidance of the recording medium 10 in a third level in front of the first level of the paper feed channel 30 into the area of a second, Straight deflecting element 36 of the turning triangle 35 arranged parallel to the paper outlet channel 31.
- the second straight deflecting element 36 essentially consists of two partial deflecting elements 36/1 and 36/2 and a deflecting rod 36/3 arranged between them in a recess.
- the two Railu steering elements 36/1 and 36/2 are constructed from segment-like hollow profiles, the first partial deflecting element 36/1, viewed in the direction of paper travel, being fixed stationary in a housing frame of the wender, and the partial deflecting element 36/2 via a hinge frame pivotable. Together with a downstream second oblique deflecting element 37, it forms the pivotable turning triangle 35.
- the oblique deflecting element 37 likewise has a deflecting element in the form of a hollow deflecting rod arranged approximately 45 ° to the paper running direction.
- the recording medium 10 supplied to the straight deflection element 36 is deflected with a large deflection radius and is fed in a fourth level via the second oblique deflection element 37 to the paper outlet channel 31, which is located in the second level.
- the diameter or the deflection radius of the straight deflection elements is larger than that of the oblique deflection elements.
- the deflecting elements have wear-resistant polished surfaces as deflecting surfaces 38, which serve as sliding surfaces for the recording medium 10.
- the deflection elements are encompassed in the form of guide plates at a distance from outer guide surfaces 40 forming a guide channel 39 (FIGS. 4, 5) for the recording medium 10.
- the complete representation of the guide channel has been omitted in FIGS. 4 and 5 for reasons of clarity.
- the guide channel 39 leading around the deflection elements 34, 32 to the straight deflection element 36 serves as an insertion aid for the start of the recording medium.
- a motor-driven paper transport element 41 arranged in the paper inlet channel 30 in the form of a pivotable friction wheel or a tractor supports the feed to the guide channel 39.
- a paper transport device 42, 43 is assigned to the paper outlet channel 31 and feeds the recording medium 10 to the return channel to the transfer station 15. It consists of a motor-driven paper transport roller 42 arranged on the pivotable turning triangle 35 and a resilient counter roller 43 arranged in the pivoting area of the turning triangle 35 and stationary in the paper outlet channel 31. between which the record carrier 10 is guided so that the motor-driven paper transport roller 42 engages on the side of the record carrier not yet printed.
- the deflection elements 38 also only touch the unprinted side with their deflection surfaces 38. This prevents blurring of the already fixed opposite side.
- the deflection surfaces 38 In order to reduce the friction between the sliding surfaces and the recording medium in the region of the deflection points, the deflection surfaces 38 have air outlet openings 44 (FIG. 3), via which an air cushion between the recording medium 10 and the deflection surfaces 38 can be generated.
- the cavities of the deflection elements are connected to one another and serve as air supply channels.
- a connection module arranged in the receiving area for the turning device in the device
- the turning triangle 35 can be coupled to the right-hand turning triangle 33 for the controlled supply of blown air via a blower 46. It also contains a plug for the electrical connection. So that the blowing air can also be supplied to the deflecting elements of the pivotable turning triangle 35, the turning triangle 35 has a connecting pipe 47 which can be coupled to the oblique deflecting element 32.
- the paper inlet channel 30 of the turning device 28 is connected via a paper transport element 49 to a record carrier output channel 29 (FIG. 2) which is assigned to the fixing station 18 and which has a usable width of at least twice the bandwidth of the record carrier 10.
- the developer station 14 can also have two separate developer stations 14/1, 14/2 for e.g. red and black
- the turning device is designed as an independent, sturdy structural unit and can be pulled out and exchangeably mounted in the device on telescopic rails 48 (FIGS. 6, 7). This means that faults are resolved at Pandalau and when service is required Folding down the swiveling outer guide surfaces 40 makes all deflection elements freely accessible. Also, if a turning device with automatic conveyance cannot be used due to critical properties of the recording medium, this turning device can be removed in a few simple steps and replaced by the turning device according to the invention and the recording medium can be inserted manually.
- the beginning of the recording medium is first transported through the guide channel 39 with the aid of the paper transport element 41 until it reaches the area of the pivotable turning triangle 35 (FIG. 4).
- the turning triangle 35 is pivoted down and freely accessible. From there it is placed around the divided vertical straight deflection element 36 and then in an arc around the second oblique deflection element 37.
- the driven paper transport roller 42 arranged on the upper side of the pivotable part of the turning triangle 35 is in the
- Insert mode not effective.
- the record carrier 10 is pulled and held by hand via this paper transport roller 42.
- the swivel arm (turning triangle 35) is swiveled in.
- the driven paper transport roller 42 moves with the recording carrier against the spring-mounted counter roller 43, which is fastened to a fixed part of the turner.
- the pressure roller 43 rests with uniform force and the recording medium 10 is held between the rollers 42, 43 until the printing device starts.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4435798 | 1994-10-06 | ||
DE4435798 | 1994-10-06 | ||
PCT/DE1995/000707 WO1996011427A1 (en) | 1994-10-06 | 1995-05-31 | Reversing device with manual feed for strip print media |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0784810A1 true EP0784810A1 (en) | 1997-07-23 |
EP0784810B1 EP0784810B1 (en) | 1999-08-04 |
Family
ID=6530144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920738A Expired - Lifetime EP0784810B1 (en) | 1994-10-06 | 1995-05-31 | Reversing device with manual feed for strip print media |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0784810B1 (en) |
DE (1) | DE59506545D1 (en) |
WO (1) | WO1996011427A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1113757C (en) * | 1998-10-27 | 2003-07-09 | 富士通株式会社 | Two-side printer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010060410A1 (en) | 2010-11-08 | 2012-05-10 | OCé PRINTING SYSTEMS GMBH | Device for turning printing material used in e.g. printer, has pressing element for pressing the deflecting elements in the region of the recess against the receiving elements |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3406244A1 (en) * | 1984-02-21 | 1985-08-22 | Siemens AG, 1000 Berlin und 8000 München | LASER PRINTING SYSTEM FOR MULTICOLOR AND BACKSIDE PRINTING |
EP0575367B1 (en) * | 1991-03-11 | 1995-05-10 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Deviating device for deviating a printing web between two high-speed printers |
US5546178A (en) * | 1993-05-19 | 1996-08-13 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Printer device for printing web-shaped recording media having different web widths |
DE4335473C2 (en) * | 1993-10-18 | 2001-07-12 | Oce Printing Systems Gmbh | Turning device for a tape-shaped recording medium |
-
1995
- 1995-05-31 WO PCT/DE1995/000707 patent/WO1996011427A1/en active IP Right Grant
- 1995-05-31 EP EP95920738A patent/EP0784810B1/en not_active Expired - Lifetime
- 1995-05-31 DE DE59506545T patent/DE59506545D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9611427A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1113757C (en) * | 1998-10-27 | 2003-07-09 | 富士通株式会社 | Two-side printer |
Also Published As
Publication number | Publication date |
---|---|
WO1996011427A1 (en) | 1996-04-18 |
EP0784810B1 (en) | 1999-08-04 |
DE59506545D1 (en) | 1999-09-09 |
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